润滑科技信息平台

Twin thickness dominates the tribological properties of (111)-oriented nanotwinned copper with micro-scale grain

出版日期: 2025-08-20

DOI: https://doi.org/10.1016/j.wear.2025.206299

作者: Zhidong Zheng a b; Mingyan Huang a b; Xiaoye Huang c; Hongfa Zhang a b; Yongjin Mai a b;

This study explored how the initial microstructure affects the friction and wear resistance of nanotwinned copper (Cu). We prepared (111)-oriented nanotwinned Cu films with varying mean twin thickness and tested their performance under dry-sliding conditions. Results revealed that twin spacing critically influences wear behavior: wider-spaced twins allow easier dislocation slip, leading to dynamic recrystallization within twin lamellae. In contrast, uniformly narrow twin spacing enhances the material’s ability to adapt to friction-induced strain, forming a stable hybrid structure. This structure prevents dislocation movement and strain concentration, significantly improving wear resistance. This work highlights microstructure optimization as a key strategy for designing durable nanotwinned metals.

全文链接: https://www.sciencedirect.com/science/article/pii/S004316482500568X/pdfft?md5=15e080f9428ef25196f2688c8e29c9f5&pid=1-s2.0-S004316482500568X-main.pdf

Microstructure and Tribological Properties of Cold-Sprayed Cu/B4C Composite Coating

Pub Date: 2025-08-20 DOI: https://doi.org/10.1016/j.wear.2025.206299

[Chun Li, Kangzhi Ma, Zheng Zhang, Liyong Ni, Bo Wen, Zhenxiao Yang, Runhan Shao, Dong Qu]

Mechanistic Effects of Pre-lubrication and Lubricant Preheating on Lubrication and Wear in Diesel Engines During Sub-Zero Cold Starts

Pub Date: 2025-08-20 DOI: https://doi.org/10.1016/j.wear.2025.206299

[Yiqiao Guo Corresponding Author, Wendi Zhu Corresponding Author, Penghao Niu Corresponding Author, Zhonghao Gao Corresponding Author, Xu Yang Corresponding Author, Hao Zhang Corresponding Author]

INVESTIGATIONS ON MILLING OPERATIONS OF AMPCO USING TIALN/DLC COATINGS: TOOL WEAR, AND SURFACE ROUGHNESS

Pub Date: 2025-08-20 DOI: https://doi.org/10.1016/j.wear.2025.206299

[Naiara Sebbe Corresponding Author, Fábio Freitas Corresponding Author, Rafaela Casais Corresponding Author, Francisco J. G. Silva Corresponding Author, Filipe Fernandes Corresponding Author, André Pedroso Corresponding Author, Eduardo Silva Corresponding Author, Ricardo Alexandre Corresponding Author]